<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="https://cdn.jsdelivr.net/npm/vue@2.6.10/dist/vue.js"></script>
</head>

<body>
    <div id="root">
        <h2>展示</h2>
        <button @click="isLogin=true">登录</button>
        <button @click="isLogin=false">注册</button>

        <template v-if="isLogin">
            <p>登录页面</p>
            <p>登录......</p>
        </template>
        
        <template v-else>
            <p>注册页面</p>
            <p>注册......</p>
        </template>

    </div>
    <script>
        Vue.config.productionTip = false;	 // 阻止 Vue在启动时生成生产提示
        
        const vm = new Vue({
            el: "#root", // 挂载的容器
            data() { // 数据
                return {
                    isLogin:true
                }
            }
        })
</script>
</body>

</html>